Transmission Line Faults Deepen Lagos Electricity Supply Crisis as Outages Persist

Power outages have persisted across parts of Lagos for more than a week after reduced electricity generation on Nigeria's national grid and faults on two critical 330-kilovolt transmission lines disrupted supply to the country's commercial hub.

Ikeja Electric, which distributes electricity across much of Lagos, said the disruptions were caused by weakened grid generation alongside the tripping of two 330kV transmission lines feeding its network. The company identified Ikeja and Oworonshoki among the worst-hit areas, while residents in several other districts have also reported prolonged blackouts.

In a customer notice issued on Tuesday, the utility revealed that it was working with other electricity sector stakeholders to restore normal supply but did not indicate when full service would resume.

"We are working closely with the relevant stakeholders to restore normal supply as quickly as possible," the company said, apologising for the inconvenience caused to customers.

"We sincerely regret the inconvenience this situation may have caused and appreciate your patience, understanding, and continued support while efforts are underway to resolve the issue," it added.

Transmission constraints remain a major challenge

Transmission infrastructure has remained one of the weakest links in Nigeria's electricity value chain despite efforts to improve generation and distribution. The national grid has suffered several system collapses and widespread outages in recent years, with many traced to transmission line faults, equipment failures and ageing infrastructure.

During the rainy season, which typically runs from June to September, heavy rainfall, flooding and lightning frequently damage transmission facilities, increasing the risk of outages.

The aforestated disruption emphasises the continued need for investments to modernise the transmission network and improve electricity reliability, particularly in Lagos, Nigeria's largest commercial and industrial centre, where sustained power supply is critical for businesses and households.